Ball-bearing.



J. VURRABER. BALL BEARING.

APPLICATION FILED MAZ'ZB, 191s.

Patentaiii Nov. 11, 1913.

JQSEF VORRABER, 0F FRANKFORT-ON-THE-ODER, GERMA NY, ASSIGNOR TO MARKTQCHE MASCHINENBAUANSTALT GESELLSCHAFT MIT BESCHBANKTER HAFTUNG, OF FRANKFORT-ON-THE-ODER, GERMANY.

BALL-BEARING.

Specification of Letters Patent.

Patented Nov. i. l,

Application filed May 28, 1913. Serial No. (70AM To all whom it may concern I Be it known that I, JOSEF VoRRABnn, a citir'enof the Empire of Austria-Hungary, residing at Frankfort-on-the-0der, in the Kingdom of Prussia, Germany, have'invenh ed certain new and useful Improvements-in Ball-Bearings; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in ball bearings; and more particularly in ball hearings, in which two sets of balls are disposed between an outer cylindrical member having grooves formed about the inner circumference, and an inner member having a circumferential outer surface, the sets of balls being separated by a ring located between the said sets. In known constructions of this class the said ring is formed at both sides with spherical cavities which are formed in such a way, that the balls bear on the said ring only with their neutral. zones.

The objectof the improvements is to provide a ball bearing of this class in which the balls can be brought into the space between the outer and inner rings, without providing a notch in the outer ring through which the balls can be passed.

With this object in view my invention consists in providing an intermediate ring in which at one side of the ring at least two diametrically opposite cavities are extended to the inner circumference of the ring, so that by temporarily omitting the balls belonging into the said extended cavities and fillingonly the other cavities a dianietrical member with its planeperpendicular to the cylindrical bearing member.

. For the purpose of explaining the invention an example embodying the same has been shown in the accompanying drawing, in which the same letters of reference have been used in all the views to indicate corresponding parts.

In said drawingFigure 1, is a section of the ball bearing, Fig. 2, is a side view of a part thereof. Fig. 3, is a plan view of a few balls with the guiding ring placed between the balls of the two sets. and Fig. 4, is a partial side view of the guiding ring.

As shown in the drawing the ball bearing space is provided for inserting the spherical consists of an outer cylindrical ring 6, an innor ring 62 having a spherical outer bearing surface, a guidingring a, and two sets of balls i1 located one on opposite sides of the guiding ring. The guiding ring a is made of a single piece of metal, such for example cast metal, iron, or steel, and at one of its sides it is formed with spherical'cavities Zi all of which have the same depth. The radiusof the curvature of the said cavities is slightly larger than the radius of the balls, so that the balls engage the ring exclusively with their neutral zones and a minimum of friction is produced. The opposite side of the guiding ring is likewise formed with spherical cavities b.- litowever, at this side two or more cavities 0 located diametrically opposite each other are flat tened and broadened from their deepest parts to the inner circumference of the ring. Thereby I am epabledto insert the inner spherical ring (K into the hearing which is otherwise filled with balls and thereafter to fill in the last balls. Thereby, filling notches which in other constructions are provided in the bearing surface of the outer ring are avoided.

The parts of' the ball bearing are puttogather in the following way: The outer bearin ring 6 is temporarily placed on a subsidiary ring (not-I shown) which is so formed, that the lower set of balls it is located on the said subsidiary ring the proper distance from the medium plane of the hearing ring 0, and is also pressed incontact with its groove 7' formed in the bearing surface of the outer ring 0. After the guiding ring a has been placed on the lower set of balls, the balls of the upper set are placed on the spherical cavities of the guiding ring, except however those balls which be long to the flattened cavities and which must temporarily be omitted, in order that the inner bearing ring can be inserted. Now the inner spherical bea ring ring d is inserted with its plane perpendicular to the plane of the guiding ring into the space provided by the cavities which are not provided with their balls, so that the said inner ring bears on the halls of the lower set. 'lhcreuponthe inner ring is turned about its vertical axis atan angle of about 90 degrees, and the last balls are brought into position from the inner side of the bearing. Finally the Bil inner ring is turned about its norizontal axis at an angle of 90 degrees. so that itassumes its correct position within the ball hearing. which is now ready for use. For dismonnting the hall hearing the same operation is repeated in the reverse order; Thereby I am cnaliled at any time to replace one or more of the halls by other ones in case of wear. It. as usual. the distance of the sets of halls is equal to the diameter of the halls, the cavities can be located so closely to one another: that there is not more clearance between the balls as is necessary to prevent the same from contacting with one another, and the hearing is praetically completely filled with balls and has a maximum bearing capacity.

I claim herein as my invention:

1. In a ball bearing. the combination with two sets of balls of an inner and outer hearinglmember, one of said members having a spheri 'al bearing surface. and the other one having two ciremnferent ial spherical grooves corresponding to the diameter of the balls, and an intermediate ring placed between the sets of balls and having spherical cavities corresponding to thediameter of the balls. at least two diametrically opposite cavities at one side of the intermediate member being extended to the circumference of the intermediate ring which is adjacent to the spherical hearing surface.

'3. [n a hall hearing. the combination with twosets of balls. of an inner and outer hearing memher. the inner one of said members having a spherical bearing surface and the outer one having two circmnferential grooves corresponding to the diameter of the halls. and an intermediate ring placed between the sets of balls and having spherr eal cavities correspomling to the diameter of the balls. at last two diametritatlly opptrsite cavities at one side of the intermediate member heing extended to the inner eircnmlerenee ot' the intermediz'ite ring.

In testimony whereof I hereunto allix my signature in the presence of two witnesses. 

